Wrench.



J. R. BAILEY.

. WRENCH. f

APPLIOATION FILED 13130.16, 1907. BENEWED AUG. l1, 1908.

91 4,629 Patented Mar. 9, 1909.

. Y I @d n B MWL? JOHN R. BAILEY, OF AKRON, OHIO.

WRENCH.

Specification of Letters Patent.

Patented March 9, 1909.

Application i'led December 16, 1907, Serial No. 406,714. Renewed August11, 1908. Serial No. 448,005.

To all whom it may concern:

Be it known that l, JOHN RUSSELL BA1- LEY, a citizen of the UnitedStates, residing at Akron, in the county of Summit and State of Ohio,have invented new and useful lmprovements in TWrenches, of which thefollowing is a speciiication.

This invention relates to wrenches, especially that type known as pipewrenches, and the objects thereof are to produce one wherein theshiftable member thereof may be instantly moved to a definite positionand there be locked against further movement, capable of eil'ectuallygrasping the object on which it is to be used and releasable therefrompromptly upon the application of pressure to the releasing mechanism.

A further object is to produce a simple, effective, strong andserviceable wrench provided with suitable mechanism to permit instantadjustment and release of the jaws with respect to an object.

Other advantages constituting objects of this invention will more fullyappear in the subjoined description.

A practical embodiment of my invention is illustrated in theaccompanying drawings, in which similar reference numerals indicate likeparts in the different iigures.

In the drawings, Figure 1 is a view in side elevation of my improvedwrench; Fig. 2 a longitudinal, sectional view of the same showing theinternal mechanism of the wrench; Fig. 3 a sectional view of a completewrench on line A of Fig. 2,' Fig. 4 is a view similar to Fig. 3 on lineB; and, Fig. 5 a view similar to Figs. 3 and 4 on line C.

The body of the wrench consists of two cooperating hollow members 1 and2 adapted to be clamped together by means of pins or bolts 3 with twocavities therein, referred to in the drawings by the reference numerals18 and 19 for containing the mechanism by which the manipulation of thewrench is accomplished. The shiftable member of the wrench comprises ajaw 4 provided with a serrated working edge 5 and made integral with apreferably rectangular bar 6 positioned in the cavity 18. Adjacent theinner end of the bar 6 the members 1 and 2 are provided withinwardly-extending partitions 7 having registering grooves therein,which,

when the members 1 and 2 are clamped together form an opening andconstitute a bearing for a longitudinally-shiftable bolt 8. This bolt 8is also steadied by passing through an opening constituting a bearing inan interiorly-threaded cap 9 engaging with the handle end of the wrenchwhich is threaded for this purpose. The bolt 8 eX- tends outwardlythrough the opening in the cap 9 for a purpose to be later described.Mounted on the bolt 8 in the cavity 19 is a spring element 10 adapted tobear against the partitions 7 at one end and against a collar 11 on thebolt 8 held from movement by means of a pin 12.

On the forward ends of the members 1 and 2 are circularly-formedintegral ears 13 provided with openings to receive a bolt or pin 14extending therethrough and constituting a pivot for a jaw 15 designed tobe capable of a slight rocking movement thereon but otherwiseconstituting the iixed jaw of the wrench. The jaw 15 is .provided withlateral recesses 16 to receive the ears 13 so that the sides thereofwill be flush with the members 1 and 2. rlhis jaw 15 is provided with anotch or shoulder 39 constituting an abutment adapted to engage adepending shouldered portion 17 of the members 1 and 2 and be arrestedfrom further rearward movement thereby. Movement of the jaw 15 in theopposite direction is limited by the engagement of the upper face of thejaw with the under surface of the bar 6 which constitutes an abutmentfor that purpose. The bar is provided on its under face with a recess 20in which is mounted the mechanism for temporarily locking the shiftablejaw 4 in a finned position and which consists of the followingmechanism: rlhe position of the recess 20 is such as to leave a narrowdependingzportion 21 of the bar 6 existing between the rear end thereofand the recess, and this portion 21 is provided with a centralupwardlyeextending groove (not shown in the drawings) and in which ispivoted on a p pin 22 a forwardly-eXtending dog 23 having a toothedunder face adapted to engage teeth 24 formed in the iioor of the cavity1S. rlhe forward portion of the dog 23 is provided with a centralupwardly-extending fin 25 having near its top a laterally-proH jectingpin 26 Xedly positioned therein. The upper surface oi the dog 23 isprovided with an inclined portion 27 and a horizontal portion 23 on bothsides of the En 25. Positioned between the upper surface of the dog 23and the top of the recess 20 is a combined releasing and locking member29 having its lower face so formed as to fit the upper surface of thedog 23 and provided with a central groove arranged to receive the iin25. This member 29 is also provided with a pair oi parallel slots 30formed transversely therein and inclined at an angle to the longitudinalaxis oi' the wrench and adapted to receive the laterally-projectingportions of the pin 26 and constitute ways therefor. The member 29 isprovided with a ridge 31 on its upper surface adapetd to engage in acorresponding groove 32 in the upper surface of the recess 20 in the bar6, constituting thereby a tongue and groove arrangement for properlyguiding the member 29 when it is shifted longitudinally of the recess20. The member 29 is moved by means oi a rod 33 which is freely slidablein a suitable groove in the under surface ol' the bolt 3. Vifithin thecavity 19 the under portion of the bolt 3 is recessed, forming ashoulder 34, through which projects the rod 33 and the shoulder 4 formsan abutment for a spring element 35 mounted on the rod 33. The outer endoi the rod 33 is provided with an enlarged portion 36 preferably madeintegral therewith and oi a curvilinear exterior corresponding to the,curvature of the bolt 8, so that when combined the two make a truecylinder where they pass through the opening in the cap 9. The enlargedportion 36 is provided at its outer end with an upwardly-extending head37 which is positioned at a considerable distance from the end of thebolt 8 but is adapted to engage the same when the head 37 is pushedforward a suliicient distance.

ln order to strengthen the front portion of the wrench and assist theears 13, l inclose the members 1 and 2 within a strap 38 having near itsends suitable openings to receive the bolt or pin 14, for thc reasonthat the danger of breakage of the ears 13 is thereby materiallydecreased by means of this strap 38.

rlhe operation of the device is as follows: Assuming the parts to be inthe position shown in Fig. 2 and that the operator desires to employthis wrench upon a pipe, for example, he preferably grasps the handlewith one hand and with his thumb pressesv inward on the head 37 whichcauses the rod 33 to shift longitudinally toward the front end of thewrench. This movement of the rod 33 causes the member 29 to move for.-ward in the'recess 20 and as it does so the sides of the slots 30engaging the projecting portions of the pin 26, raise the iin 25 and dog23 out of engagement with the teeth. 24 until the bar 6 is free to moveby reason of the disengagement of the dog with the teeth. By the timethe movement of the member 29 has raised the dog 23 to inoperativeposition the head 37 encounters the end of the bolt 8 and pushes thesame forward in unison with itself overcoming the iniiuence of thespring element 10 in doing so and forcing the jaw 4 outward from the jaw15 until suflicient space intervenes between them to receive the pipe orother object on which the same is to be used. A release of the pressureof the operators hand on the head 37 causes the jaws 4 and 15 to clampthe pipe or nut under the iniiuence of the spring element 10, whichwould otherwise normally return the parts to their original position. Assoon as the jaws 4 and 15 have engaged the object, the spring member 35forces the rod 33 rearwardly which brings the member 29 into theoperative position shown in Fig. 2, thus causing the dog 23 tooperatively engage the teeth 24 of the cavity 18 thereby locking the jaw4 and bar 6 against further movement in either direction. ln order toreturn the parts to the position shown in Fig. 2, sufficient pressure isexerted on the head 37 by the operator to release the dog 23, as alreadydescribed, and unless the inward movement of the jaw 4 is interruptedsufficiently to permit the head 37 to separate from the end of the bolt3 the parts will spring back to their original position. lt will benoted that as long as the head 37 is in abutting relation with the endof the bolt 8 and the head 37 pushed in suiliciently to release the dog23 from engagement with the teeth 24, a free shifting movement of thebar 6 and jaw 4 is obtainable.

What l claim and desire to secure by Letters Patent, is

1. A wrench oi the kind described comprising a pair of cooperatinghollow members, a 'fixed jaw carried by said members, a shiitable barprovided with a jaw mounted in said members, a bolt extending fromV saidbar through the end of said wrench, a resilient element for moving saidbar in one direction, engaging means carried by said bar for locking itagainst movement and releasing means ior actuating said engaging meansrovided with an extension projecting t rough the end of said wrenchcapable of being moved into releasing position upon the application ofpressure.

2. A wrench of the kind described comprising a pair of cooperatinghollow members, a 'fixed jaw carried by said members, a shiftable barprovided with a jaw mounted in said members, a bolt extending from saidbar outwardly through the end oi said wrench, a resilient element formoving said bar in one direction, a dog carried by said bar for lockingit against movement, releasing means for said dog, and means extendingfrom said releasing means through the end of said wrench movable intoreleasing position upon the application of pressure and provided withmeans for engaging said bolt when said dog is out of locking position.

3. A wrench of the kind described comprising a pair of cooperatinghollow members, a fixed jaw carried by said members, a shiftable barprovided with a jaw in said members, a bolt carried by said bar extend-`ing outwardly through the end of said wrench, a locking dog carried bysaid bar, a releasing member therefor, an operating rod extending fromsaid releasing member through the end of said wrench provided with meansfor engaging the end of said bolt, said last named means being soositioned as to engage and operate said bo.t and bar when said releasingmember is moved into releasing position.

ll. A wrench of the hind described comprising a pair of cooperatinghollow members, a fixed j aw carried by said members, a shiftable barprovided with a jaw mounted in said members, a spring-actuated boltcarried by said bar extending through the end of said wrench, a lockingdog carried by said bar, a releasing memberl for disengaging said dog, arod carried by said releasing member extending outwardly from the end ofsaid wrench, means to normally keep said dog in locking position, saidrod being provided with means for shifting said bolt and bar when saidreleasing member' has been moved to disengaging position.

5. A wrench comprising in combination a pair of cooperating hollowmembers provided with a iixed jaw, a perforated cap for securing theopposite ends of said members together, a spring actuated shiftable barnounted in said members provided with a head constituting a j aw, aboltextending from said b-ar through the perforation in said cap,

4a locking dog carried by said bar, a releasing member therefor, and anoperating rod for said releasing member extending through said capmovable into releasing position upon the application of pressure.

6. A wrench comprising in combination a pair of cooperating hollow bodymembers provided with a iixed jaw, a spring actuated shiftable barmounted in said body members having a head constituting a j aw, said barprovided with a recess, a dog carried by said bar, and a releasingmember for said dog positioned within said recess, said releasing meansprovided with an extension projecting through the end of said wrenchcapable of being moved into operative position upon the application ofpressure.

7. The combination in a wrench of the kind described comprising a pairof coperating hollow body members provided. with registering transversepartitions for dividing the interior thereof into two cavities, saidmembers provided with a fixed jaw, a shiftable bar mounted in said bodymembers provided With a head constituting a jaw, a bolt carried by saidbar extending through one of said cavities and the end of said wrench, aspring positioned in one of said cavities for actuating said bolt andbar, a dog adapted to engage the inner1 faces of said body memberspivotally mounted on said bar, a releasing member for moving said dog,and means extending through the end of said wrench for actuating saidreleasing member capable of being moved into operative position upon theapplication of pressure.

8. The combination in a wrench of the kind described comprising a pairof coperating hollow body members provided with registering transversepartitions for dividing the interior thereof into two cavities, saidmembers provided with a fixed jaw, a shiftable bar mounted in said bodymembers provided with a head constituting a jaw, a bolt carr ed by saidbar extending through one of said cavities and the end of said wrench,said bolt provided with a groove, a spring element in one of saidcavities adapted to actuate said bolt and bar, a dog adapted to engagethe inner faces of said body members pivotally mounted on said bar, ashiftably mounted locking and releasing member connected with said dog,and means mounted in the groove in said bolt for moving said locking andreleasing member to releasing position upon the application of pressure.

9. A wrench of the kind described cornprising a pair of co eratinghollow members, a fixed jaw carried y said members, a spring actuatedbar shiftably mounted in said members rovided with a head constituting ajaw, a locliing dog pivotally mounted on said bar engaging saidmembers,a combined releasing and locking member for operating said dog7 meansattached to said last named member extending through the end of saidwrench for actuating said member, and a resilient element for causingsaid means to move said combined releasing and locking member normallyinto locking position, said combined locking and releasing membermovable to releasing position upon the application of pressure tosaidactuating means.

l0. A wrench comprising in combination a pair of coperating hollow bodymembers provided with a fixed jaw, a s ring actuated shiftable barmounted in said ybody members having a head constituting a j aw forcoperation with said fixed jaw, a dog carried by said bar, a combinedreleasing and locking member for said dog positioned in the interiorsaid releasing and looking means extending through the end of saidWrench arranged toY normally hold said member in looking position and;to move said member to inoperative position upon the application ol'pressure thereto.

In testimony whereof I have hereunto set my hand in presence of tWosubscribing Witnesses.

JOHN R. BAILEY. Witnesses: Cf., E. HUMPHREL GLENARA Fox.

